Which layover airport offers the lowest fares from Knoxville to Lisbon?

Flights via Washington, D.C. (IAD) offer the lowest average round-trip price of $760.

Which airport is the most popular layover for flights between Knoxville and Lisbon?

Washington, D.C. (IAD) was the most common stop: 86% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Knoxville to Lisbon?

Flights connecting via Washington, D.C. (IAD) have the shortest average one-way travel time: 9h 55m.

Which layover airport has the shortest connection time from Knoxville to Lisbon?

Washington, D.C. (IAD) has the shortest average layover time for this route: 1h 45m.

What airlines fly to Lisbon?

United Airlines, British Airways and Delta are the top three most popular airlines that fly to Lisbon from Knoxville according to our data. United Airlines is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 4 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

Prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport are updated daily.

How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

As of September 2026, there are 2 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.

How old do you have to be to fly from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

The required travel and health documents for your Lisbon Humberto Delgado Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$737 Cheap Flights from Knoxville to Lisbon in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Knoxville to Lisbon

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:45 am - 6:55 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

19h 10m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

5:00 am - 11:59 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

23h 59m2 stops Frankfurt am Main Washington, D.C. Dulles Intl

$737Multiple Airlines

Wed, Nov 11 - Wed, Nov 18

3:55 pm - 9:05 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

12h 10m1 stop Philadelphia

6:30 am - 8:43 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

19h 13m2 stops Madrid Barajas Charlotte Douglas

$740American Airlines

Wed, Nov 11 - Wed, Nov 18

9:45 am - 10:20 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

19h 35m1 stop Washington, D.C. Dulles Intl

11:55 am - 11:59 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

17h 04m1 stop Washington, D.C. Dulles Intl

$746United Airlines

Wed, Nov 11 - Wed, Nov 18

11:35 am - 11:25 pmTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

30h 50m2 stops Chicago O'Hare Intl Madrid Barajas

6:50 pm - 11:59 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

33h 09m2 stops Madrid Barajas Chicago O'Hare Intl

$800Iberia

Thu, Mar 4 - Mon, Mar 15

6:02 am - 9:05 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

22h 03m1 stop Philadelphia

6:35 pm - 11:59 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

33h 24m2 stops London Heathrow Chicago O'Hare Intl

$816British Airways

Thu, Mar 4 - Mon, Mar 15

10:16 am - 10:20 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

19h 04m1 stop Washington, D.C. Dulles Intl

8:55 am - 4:25 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

35h 30m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$818United Airlines

Thu, Mar 4 - Mon, Mar 15

11:35 am - 10:30 pmTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

29h 55m2 stops Chicago O'Hare Intl London Heathrow

6:35 pm - 11:59 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

33h 24m2 stops London Heathrow Chicago O'Hare Intl

$818British Airways

Fri, Mar 5 - Mon, Mar 15

6:02 am - 9:05 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

22h 03m1 stop Philadelphia

11:05 am - 9:05 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

14h 00m1 stop Philadelphia

$818British Airways

Thu, Mar 4 - Mon, Mar 15

7:00 am - 10:20 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

22h 20m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

8:55 am - 4:25 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

35h 30m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$822United Airlines

Thu, Mar 4 - Mon, Mar 15

7:00 am - 8:55 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

20h 55m2 stops Chicago O'Hare Intl Toronto Pearson Intl

8:55 am - 2:42 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

33h 47m2 stops Montreal Pierre Elliott Trudeau Intl Washington, D.C. Dulles Intl

$826Air Canada

Thu, Mar 4 - Mon, Mar 15

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American Airlines flights from Knoxville to Lisbon

Our best American Airlines deals on Knoxville to Lisbon flight tickets

American Airlines

Nov 11

TYS3:55 pmKnoxville McGhee Tyson

12h 10m

1 stop

LIS9:05 amLisbon Humberto Delgado

Nov 18

LIS6:30 amLisbon Humberto Delgado

19h 13m

2 stops

TYS8:43 pmKnoxville McGhee Tyson

$740

American Airlines

Mar 4

TYS11:35 amKnoxville McGhee Tyson

16h 30m

2 stops

LIS9:05 amLisbon Humberto Delgado

Mar 13

LIS7:00 amLisbon Humberto Delgado

16h 43m

2 stops

TYS6:43 pmKnoxville McGhee Tyson

$1,017

United Airlines flights from Knoxville to Lisbon

Our best United Airlines deals on Knoxville to Lisbon flight tickets

United Airlines

Nov 11

TYS9:45 amKnoxville McGhee Tyson

19h 35m

1 stop

LIS10:20 amLisbon Humberto Delgado

Nov 18

LIS11:55 amLisbon Humberto Delgado

17h 04m

1 stop

TYS11:59 pmKnoxville McGhee Tyson

$746

United Airlines

Mar 4

TYS10:16 amKnoxville McGhee Tyson

19h 04m

1 stop

LIS10:20 amLisbon Humberto Delgado

Mar 15

LIS8:55 amLisbon Humberto Delgado

35h 30m

2 stops

TYS4:25 pmKnoxville McGhee Tyson

$818

United Airlines

Mar 4

TYS7:00 amKnoxville McGhee Tyson

22h 20m

2 stops

LIS10:20 amLisbon Humberto Delgado

Mar 15

LIS8:55 amLisbon Humberto Delgado

35h 30m

2 stops

TYS4:25 pmKnoxville McGhee Tyson

$822

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Wed 11/11

6:45 am-6:55 am

2 stops19h 10m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-11:59 pm

2 stops23h 59m

$737

Quickest round-trip

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Wed 11/11

3:55 pm-9:05 am

1 stop12h 10m

Lisbon Humberto Delgado

Wed 11/18

6:30 am-8:43 pm

2 stops19h 13m

$740

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Wed 11/11

9:45 am-10:20 am

1 stop19h 35m

Lisbon Humberto Delgado

Wed 11/18

11:55 am-11:59 pm

1 stop17h 04m

$746

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Thu 3/4

11:35 am-11:25 pm

2 stops30h 50m

Lisbon Humberto Delgado

Mon 3/15

6:50 pm-11:59 pm

2 stops33h 09m

$800

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Thu 3/4

6:02 am-9:05 am

1 stop22h 03m

Lisbon Humberto Delgado

Mon 3/15

6:35 pm-11:59 pm

2 stops33h 24m

$816

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Thu 3/4

10:16 am-10:20 am

1 stop19h 04m

Lisbon Humberto Delgado

Mon 3/15

8:55 am-4:25 pm

2 stops35h 30m

$818

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Fri 3/5

11:35 am-10:30 pm

2 stops29h 55m

Lisbon Humberto Delgado

Mon 3/15

6:35 pm-11:59 pm

2 stops33h 24m

$818

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Thu 3/4

6:02 am-9:05 am

1 stop22h 03m

Lisbon Humberto Delgado

Mon 3/15

11:05 am-9:05 pm

1 stop14h 00m

$818

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Thu 3/4

7:00 am-10:20 am

2 stops22h 20m

Lisbon Humberto Delgado

Mon 3/15

8:55 am-4:25 pm

2 stops35h 30m

$822

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Thu 3/4

7:00 am-8:55 am

2 stops20h 55m

Lisbon Humberto Delgado

Mon 3/15

8:55 am-2:42 pm

2 stops33h 47m

$826

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Knoxville to Lisbon

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Knoxville and Lisbon?

Prices are currently low for flights on this route.

Typical prices usually range from $1,497 to $1,722.
The lowest price recently found on this route was $737.

What is the cheapest month to fly to Lisbon?

In general, January is the cheapest month to fly from Knoxville to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $527. If you are unable to visit Lisbon during the month of January, then departing from Knoxville during the month February is also very affordable. Most momondo users find prices during this month for around $765.

Can stopping save me money on Knoxville to Lisbon flights?

You could potentially save up to 47% on your flight if you consider stops on a Knoxville to Lisbon flight.

When to book flights from Knoxville to Lisbon

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Lisbon according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Knoxville to Lisbon (TYS to LIS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Lisbon

Best Price Found	$737
Fastest flight time	9h 30m
Direct flights	None

The best flight deal from Knoxville to Lisbon found on momondo in the last 72 hours is $737

The fastest flight from Knoxville to Lisbon takes 9h 30m

There are no direct flights from Knoxville to Lisbon. There are no popular flight routes from Knoxville to Lisbon.

Search flight deals

Frequently asked questions about flying from Knoxville to Lisbon

How far is Knoxville McGhee Tyson to Lisbon Humberto Delgado by plane?
Lisbon Humberto Delgado is 3990.0 mi away from Knoxville McGhee Tyson. 9h 30m is a normal flight duration for this route.
When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
Prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport are updated daily.
How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
As of September 2026, there are 2 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.
How old do you have to be to fly from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.
What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?
The required travel and health documents for your Lisbon Humberto Delgado Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Knoxville to Lisbon?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Knoxville to Lisbon is United Airlines (56% of total bookings). The next most popular airline is British Airways (44%).

Best airlines flying from Knoxville to Lisbon

Compare and see reviews for airlines that fly from Knoxville to Lisbon with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $475	Free Cancellation	Rating 6.7 8,241 reviews		Search British Airways flights
United Airlines	PriceFrom $629	Free Cancellation	Rating 7.4 10,270 reviews		Search United Airlines flights

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Why should I use momondo to find a flight deal from Knoxville to Lisbon?

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Can I find flights from Knoxville to Lisbon with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Knoxville to Lisbon flights to just show those with flexible booking policies.

How can momondo help me find flights from Knoxville to Lisbon?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Lisbon from Knoxville.

I’m not ready to book a flight from Knoxville to Lisbon right now. Can momondo alert me if prices change?

Price alerts on flights to Lisbon from Knoxville are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Knoxville to Lisbon from $737

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Lisbon departing on 11/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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American Airlines flights from Knoxville to Lisbon

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How to get the cheapest flight ticket from Knoxville to Lisbon

What is the typical price of a round-trip flight between Knoxville and Lisbon?

What is the cheapest month to fly to Lisbon?

Can stopping save me money on Knoxville to Lisbon flights?

What airlines fly to Lisbon?

Which airport is the most popular layover for flights between Knoxville and Lisbon?

Which layover airport offers the lowest fares from Knoxville to Lisbon?

Which layover airport has the shortest travel time from Knoxville to Lisbon?

Which layover airport has the shortest connection time from Knoxville to Lisbon?

When to book flights from Knoxville to Lisbon

Cheap Knoxville to Lisbon (TYS to LIS) flight deals and tips

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An easier way to manage your Lisbon trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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